Restructure sandbox code to reduce dependencies pulled in by intercept code.

sandbox/win/src/win_utils.cc

Index: sandbox/win/src/win_utils.cc
diff --git a/sandbox/win/src/win_utils.cc b/sandbox/win/src/win_utils.cc
index f5c479a35a2cb732e84e970d39544b80829cc706..738efa3f73bb6d7299d87af8b18e1237fe73a230 100644
--- a/sandbox/win/src/win_utils.cc
+++ b/sandbox/win/src/win_utils.cc
@@ -276,26 +276,6 @@ bool GetNtPathFromWin32Path(const std::wstring& path, std::wstring* nt_path) {
   return rv;
 }
 
-bool WriteProtectedChildMemory(HANDLE child_process, void* address,
-                               const void* buffer, size_t length) {
-  // First, remove the protections.
-  DWORD old_protection;
-  if (!::VirtualProtectEx(child_process, address, length,
-                          PAGE_WRITECOPY, &old_protection))
-    return false;
-
-  SIZE_T written;
-  bool ok = ::WriteProcessMemory(child_process, address, buffer, length,
-                                 &written) && (length == written);
-
-  // Always attempt to restore the original protection.
-  if (!::VirtualProtectEx(child_process, address, length,
-                          old_protection, &old_protection))
-    return false;
-
-  return ok;
-}
-
 };  // namespace sandbox
 
 // TODO(jschuh): http://crbug.com/11789